Who speaks for earth? :  based on the series of distinguished lectures sponsored by International Institute for Environmental Affairs in cooperation with Population Institute held in Stockholm concurrently with the United Nations Conference on the Human Environment, June 1972. 

 - 173 páginas ;  22 cm. 
<br/><br/><label>ISBN: </label>0393063925 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Contaminación.<br/>Ecología humana.<br/>Población.
<br/><br/><label>LC Class. No.: </label>GF8  / .W49